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        <h2>
          <span class="refentrytitle">strcpyk</span>
        </h2>
        <p>strcpyk — 
      Assign value to a string variable (k-rate)
          </p>
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      <div class="refsect1">
        <a id="idp153294064"></a>
        <h2>Description</h2>
        <p>
      Assign to a string variable by copying the source which may be a constant or another string variable. <span class="emphasis"><em>strcpyk</em></span> does the assignment both at initialization and performance time.
    </p>
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      <div class="refsect1">
        <a id="idp153345680"></a>
        <h2>Syntax</h2>
        <pre class="synopsis">Sdst <span class="command"><strong>strcpyk</strong></span> Ssrc</pre>
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      <div class="refsect1">
        <a id="idp153347792"></a>
        <h2>Examples</h2>
        <p>
      Here is an example of the strcpyk opcode. It uses the file <a class="ulink" href="examples/strcpyk.csd" target="_top"><em class="citetitle">strcpyk.csd</em></a>.
      </p>
        <div class="example">
          <a id="idp153349648"></a>
          <p class="title">
            <strong>Example 871. Example of the strcpyk opcode.</strong>
          </p>
          <div class="example-contents">
            <p>See the sections <a class="link" href="UsingRealTime.html" title="Real-Time Audio"><em class="citetitle">Real-time Audio</em></a> and <a class="link" href="CommandFlags.html" title="Csound command line"><em class="citetitle">Command Line Flags</em></a> for more information on using command line flags.</p>
            <pre class="programlisting">
<span class="csdtag">&lt;CsoundSynthesizer&gt;</span>
<span class="csdtag">&lt;CsOptions&gt;</span>
<span class="comment">; Select audio/midi flags here according to platform</span>
-odac     <span class="comment">;;;realtime audio out</span>
<span class="comment">;-iadc    ;;;uncomment -iadc if realtime audio input is needed too</span>
<span class="comment">; For Non-realtime ouput leave only the line below:</span>
<span class="comment">; -o strcpyk.wav -W ;;; for file output any platform</span>
<span class="csdtag">&lt;/CsOptions&gt;</span>
<span class="csdtag">&lt;CsInstruments&gt;</span>

<span class="ohdr">sr</span> <span class="op">=</span> 44100
<span class="ohdr">ksmps</span> <span class="op">=</span> 32
<span class="ohdr">nchnls</span> <span class="op">=</span> 2
<span class="ohdr">0dbfs</span>  <span class="op">=</span> 1

<span class="ohdr">seed</span> 0

<span class="oblock">instr</span> 1 
<span class="comment">;get one element of the input string whenever the metro</span>
<span class="comment">;triggers, and call a subinstrument to play the file</span>

Smember   <span class="opc">strget</span>    p4
istrlen   <span class="opc">strlen</span>    Smember
kprint    <span class="opc">init</span>      0
ktrig     <span class="opc">metro</span>     .6 

 <span class="comment">;whenever the trigger gives signal</span>
 <span class="octrl">if</span> ktrig <span class="op">==</span> 1 then
  <span class="comment">;choose a random element (0, 1 or 2)</span>
kel       <span class="opc">random</span>    0, 3.9999
kel       <span class="op">=</span>         <span class="opc">int</span>(kel)
 <span class="comment">;make a copy for leaving Smember intact</span>
Scopy     <span class="opc">strcpyk</span>   Smember 
 <span class="comment">;set the initial index for reading substrings</span>
kndx      <span class="op">=</span>         0 
 <span class="comment">;set counter for searching the element</span>
kcount    <span class="op">=</span>         0
 <span class="comment">;start looping over the elements in Smember</span>
<span class="olabel">loop</span><span class="op">:</span>
kdelim    <span class="opc">strindexk</span> Scopy, "<span class="op">:</span>"
  <span class="comment">;as long as ":" occurs in Scopy, do:</span>
  <span class="octrl">if</span> kdelim <span class="op">&gt;</span> 0 then
   <span class="comment">;if this is the element to get</span>
   <span class="octrl">if</span> kel <span class="op">==</span> kcount then
    <span class="comment">;read it as substring</span>
Sfile     <span class="opc">strsubk</span>   Scopy, kndx, kdelim
kprint <span class="op">=</span> kprint<span class="op">+</span>1
    <span class="comment">;and jump out</span>
          <span class="octrl">kgoto</span>     <span class="olabel">call</span>
   <span class="comment">;if not</span>
   <span class="octrl">else</span>
    <span class="comment">;cut off this element from Scopy</span>
Scopy     <span class="opc">strsubk</span>   Scopy, kdelim<span class="op">+</span>1, istrlen
   <span class="octrl">endif</span>
   <span class="comment">;if no element has been found,go back to loop </span>
   <span class="comment">;and look for the next element</span>
kcount    <span class="op">=</span>         kcount<span class="op">+</span>1
          <span class="octrl">kgoto</span>     <span class="olabel">loop</span>
  <span class="comment">;if there is no delimiter left, the rest is the searched element</span>
  <span class="octrl">else</span>
Sfile     <span class="opc">strcpyk</span>   Scopy
  <span class="octrl">endif</span>
<span class="olabel">call</span><span class="op">:</span>
 <span class="comment">;print the result, call the subinstrument and play the file</span>
          <span class="opc">printf</span>    "kel <span class="op">=</span> <span class="op">%</span>d, file <span class="op">=</span> '<span class="op">%</span>s'\n", ktrig<span class="op">+</span>kprint, kel, Sfile
S_call    <span class="opc">sprintfk</span>  {{i 2 0 1 "<span class="op">%</span>s"}}, Sfile
          <span class="opc">scoreline</span> S_call, ktrig
 <span class="octrl">endif</span>

<span class="oblock">endin</span>

<span class="oblock">instr</span> 2 <span class="comment">;play</span>
Sfile     <span class="opc">strget</span>    p4
ilen      <span class="opc">filelen</span>   Sfile
p3        <span class="op">=</span>         ilen
asig      <span class="opc">soundin</span>   Sfile
          <span class="opc">outs</span>      asig, asig
<span class="oblock">endin</span>
<span class="csdtag">&lt;/CsInstruments&gt;</span>
<span class="csdtag">&lt;CsScore&gt;</span>

<span class="stamnt">i</span> 1 0 30 "mary.wav:fox.wav:beats.wav:flute.a<span class="stamnt">i</span>ff"
<span class="stamnt">e</span>
<span class="csdtag">&lt;/CsScore&gt;</span>
<span class="csdtag">&lt;/CsoundSynthesizer&gt;</span>
</pre>
          </div>
        </div>
        <p><br class="example-break" />
    </p>
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      <div class="refsect1">
        <a id="idp153353936"></a>
        <h2>See also</h2>
        <p>
          <a class="link" href="strcpy.html" title="strcpy">
            <em class="citetitle">strcpy</em>
          </a>
        </p>
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      <div class="refsect1">
        <a id="idp153355728"></a>
        <h2>Credits</h2>
        <p>
      </p>
        <table border="0" summary="Simple list" class="simplelist">
          <tr>
            <td>Author: Istvan Varga</td>
          </tr>
          <tr>
            <td>2005</td>
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